http://whois.pconline.com.cn/ipJson.jsp?ip=121.29.9.239&json=true
{ "ip": "121.29.9.239", "pro": "河北省", "proCode": "130000", "city": "石家庄市", "cityCode": "130100", "region": "", "regionCode": "0", "addr": "河北省石家庄市 联通ADSL", "regionNames": "", "err": "" }